ZONE CLASSIFICATIONS
Zone C, Zone X -
Areas determined to be outside 500-year floodplain determined to be outside the
1% and 0.2% annual chance floodplains.
Zone B, Zone X500 - Areas of 500-year flood; areas of 100-year flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 100-year flood. An area inundated by 0.2% annual chance flooding.
Zone A - An area inundated by 1% annual chance flooding, for which no BFEs have been determined.
Zone AE - An area inundated by 1% annual chance flooding, for which BFEs have been determined.
Zone AH An area inundated by 1% annual chance flooding (usually an area of ponding), for which BFEs have been determined; flood depths range from 1 to 3 feet.
Zone AO - An area inundated by 1% annual chance flooding (usually sheet flow on sloping terrain), for which average depths have been determined; flood depths range from 1 to 3 feet.
Zone AR - An area inundated by flooding, for which BFEs or average depths have been determined. This is an area that was previously, and will again, be protected from the 1% annual chance flood by a Federal flood protection system whose restoration is Federally funded and underway
Zone A1-A30 - An area inundated by 1% annual chance flooding, for which BFEs have been determined. .
Area Not
Included
(ANI),(N) - An area that is located within a community or county that is not mapped on any
published FIRM.
Zone D - An area of undetermined but possible flood hazards.
Undescribed
(UNDES) - Area of Undesignated Flood Hazard. A body of open water, such as a pond,lake,
ocean, etc., located within a community's jurisdictional limits, that has no defined
flood hazard.
Zone VE - An area inundated by 1% annual chance flooding with velocity hazard
(wave action); BFEs have been determined.
Zone V(1-30) - Costal flood with velocity hazard
(wave action); BFEs have not been determined.
FWIC - An area where the floodway is contained within the channel banks and the channel
is too narrow to show to scale. An arbitrary channel width of 3 meters is shown.
BFEs are not shown in this area, although they may be reflected on the
corresponding profile. (Floodway Contained in Channel)
100IC - An area where the 1% annual chance flooding is contained within the channel
banks and the channel is too narrow to show to scale. An arbitrary channel width
of 3 meters is shown. BFEs are not shown in this area, although they may be
reflected on the corresponding profile. (1% Annual Chance Flood Discharge
Contained in Channel)
500IC - An area where the 0.2% annual chance flooding is contained within the channel
banks and the channel is too narrow to show to scale. An arbitrary channel width
of 3 meters is shown. ( 2% Annual Chance Flood Discharge Contained in Channel)
